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I-84 Paving and Toothrock Tunnel

Construction Phase

Region 1: Portland metro and Hood River County (Hood River, Multnomah)

​​​​​​​​​​​​The Toothrock Tunnel carries I-84 east near Bonneville Dam and intersects with the Historic Columbia River Highway State Trail near Exit 41. To improve aging infrastructure, we are repairing the floor of the tunnel and repaving the highway between Multnomah Falls and Cascade Locks. 

Columbia River Gorge Construction (I-84 and the Historic Columbia River Highway)


Construction Impacts

July 7, 2022 update: Paving begins on I-84 west July 7. Expect lane closures 7 p.m. to 7 a.m. Sunday through Thursday nights. 


You can expect the following impacts to travel in the area:

  • Periodic lane and ramp closures on I-84 in the spring and summer. 
  • Narrow travel lanes and speed limit reductions for work zone safety. Please drive with care and watch for workers. ​​
  • Toothrock Tunnel to remain accessible by freight traffic during construction.
Lane and shoulder closures:
  • Periodic nightime lane closures from 7 p.m. to 7 a.m. between Multnomah Falls and Cascade Locks from Sunday through Thursday nights.
  • Daytime shoulder closures.
Visit for real-time traffic updates.  


  • ​Design completed in 2021. 
  • Construction is expected to take place from April through fall 2022. 

Schedule is subject to change.



The floor of the tunnel and pavement on I-84 between Multnomah Falls and Cascade Locks is aging and rutting. Repairs are needed to extend the life of the highway and smooth out the ride for travelers. 

To repair this infrastructure, we are repaving 13 miles of I-84, resurfacing several bridges, and repairing the I-84 east Exit 41 off-ramp toward Eagle Creek where the bridge surface has deteriorated. 

Sign up for email updates ​to stay in the loop on this project and other projects on I-84 and the Historic Columbia River Highway between Portland and Hood River.  ​


I-84 |

​Between Multnomah Falls and Cascade Locks

Cost and Funding

​Project cost: $23.8 million​


​The repairs will smooth out the ride for travelers, increase safety and extend the life of the highway​.  

Additional Information

Over the next several years, we have many construction projects planned on I-84 between I-205 and Hood River, and on the Historic Columbia River Highway between Troutdale and Hood River. 

View more information about upcoming work. 

For ADA (Americans with Disabilities Act) or Civil Rights Title VI accommodations, translation/interpretation services, or more information call 503-731-4128, TTY 800-735-2900 or Oregon Relay Service 7-1-1.

Podemos proveer la información en esta publicación en español. Para recibir la información en español, por favor llamé al (503) 731-4128.

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Contacts & Media

Work occurs along I-84 between Multnomah Falls and east of Exit 44 in Cascade Locks.

Project Contact

Community Affairs Coordinator
Katelyn Jackson
Project Hotline
24/7 Noise: 503-294-1570
Project Accommodation Request

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Last Updated

7/7/2022 1:17 PM

Project Number


Project Documents

Related documents to this project
I84-Gorge-2022_Mailer_3.pdfView the Spring 2022 Construction Mailer.